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[ALSA] pcm: add snd_pcm_rate_to_rate_bit() helper

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Add a snd_pcm_rate_to_rate_bit() function to factor out common code used
by several drivers.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Clemens Ladisch
2007-08-13 17:40:54 +02:00
committed by Jaroslav Kysela
parent 7653d55760
commit 918f3a0e8c
8 changed files with 47 additions and 145 deletions
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21
sound/pci/rme32.c
View File

@@ -258,19 +258,6 @@ static inline unsigned int snd_rme32_pcm_byteptr(struct rme32 * rme32)
& RME32_RCR_AUDIO_ADDR_MASK);
}
static int snd_rme32_ratecode(int rate)
{
switch (rate) {
case 32000: return SNDRV_PCM_RATE_32000;
case 44100: return SNDRV_PCM_RATE_44100;
case 48000: return SNDRV_PCM_RATE_48000;
case 64000: return SNDRV_PCM_RATE_64000;
case 88200: return SNDRV_PCM_RATE_88200;
case 96000: return SNDRV_PCM_RATE_96000;
}
return 0;
}
/* silence callback for halfduplex mode */
static int snd_rme32_playback_silence(struct snd_pcm_substream *substream, int channel, /* not used (interleaved data) */
snd_pcm_uframes_t pos,
@@ -887,7 +874,7 @@ static int snd_rme32_playback_spdif_open(struct snd_pcm_substream *substream)
if ((rme32->rcreg & RME32_RCR_KMODE) &&
(rate = snd_rme32_capture_getrate(rme32, &dummy)) > 0) {
/* AutoSync */
runtime->hw.rates = snd_rme32_ratecode(rate);
runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
@@ -929,7 +916,7 @@ static int snd_rme32_capture_spdif_open(struct snd_pcm_substream *substream)
if (isadat) {
return -EIO;
}
runtime->hw.rates = snd_rme32_ratecode(rate);
runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
@@ -965,7 +952,7 @@ snd_rme32_playback_adat_open(struct snd_pcm_substream *substream)
if ((rme32->rcreg & RME32_RCR_KMODE) &&
(rate = snd_rme32_capture_getrate(rme32, &dummy)) > 0) {
/* AutoSync */
runtime->hw.rates = snd_rme32_ratecode(rate);
runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}
@@ -989,7 +976,7 @@ snd_rme32_capture_adat_open(struct snd_pcm_substream *substream)
if (!isadat) {
return -EIO;
}
runtime->hw.rates = snd_rme32_ratecode(rate);
runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
runtime->hw.rate_min = rate;
runtime->hw.rate_max = rate;
}